Fermi 1D quantum gas: Luttinger liquid approach and spin-charge separation

Physics – Condensed Matter – Strongly Correlated Electrons

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12 pages, 5 figures. Accepted in Journal of Optics B: Quantum and Semiclassical Optics as a Special issue article

Scientific paper

We discuss the properties of quasi-1D quantum gases of fermionic atoms using the Luttinger liquid theory, including the presence of an optical lattice and of a longitudinal trapping potential. We analyze in particular the nature and manifestations of spin-charge separation, where in the case of atoms ``spin'' and ``charge'' refers to two internal atomic states and the atomic mass density, respectively.

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